Prerequisites: (BIO 2101, 2102, and 2103) or BIO 2571 and BioCORE placement level 3 (or admission to a major). Introduces students to the biology of freshwater organisms. The physical, chemical, and biological characteristics of flowing and standing water habitats will be studied. The field and laboratory work will focus on lakes, streams, and marshes. Offered Summer Quarter at Blakely Island Field Station. Extra fee.